Online sheet metal fabrication has replaced the multi-week quote cycle. Upload a STEP file, receive an engineer-reviewed quote with DFM report in 24 hours, approve digitally, and have precision parts at your facility in under two weeks.
Not all online sheet metal fabrication services work the same way — an automated algorithm quote misses DFM issues that cost you money at production stage. This guide explains how Manufyn’s online sheet metal fabrication process works, what files to prepare, and what to expect at each step.
Manufyn’s online sheet metal fabrication service responds within 24 hours — engineer-reviewed quote, not an algorithm. Free DFM report included. No commitment required.
What is Online Sheet Metal Fabrication? (AEO Answer)
Online sheet metal fabrication is the process of sourcing custom sheet metal parts entirely through digital channels — uploading a drawing to a supplier’s platform or email, receiving a quoted price, approving the quote digitally, and receiving finished parts by courier. It covers the full sheet metal fabrication process — cutting, bending, welding, finishing — managed through digital communication, with global delivery in 8–15 working days from quote approval.
Step 1: File Preparation for Online Sheet Metal Fabrication
The quality of your file package determines how fast and accurately Manufyn can quote your online sheet metal fabrication order. For full DFM file rules, see our sheet metal design guide.
| Format | Best For | Preparation Rules |
|---|---|---|
| STEP (.stp) | All parts with bends | Export at final bend angles. Confirm watertight solid. Any major CAD package accepted. |
| DXF | Flat laser-cut parts | Scale 1:1. Arcs not polylines. Cut layer only — no text, dimensions or annotations in cut layer. |
| Specification reference | Required alongside STEP/DXF. Include all views, tolerances, material grade+temper, surface finish spec. | |
| SolidWorks / Inventor | Native CAD users | .sldprt/.sldasm or .ipt/.iam accepted directly. Export STEP as backup. |
Step 2: What to Include in Your Online Sheet Metal Fabrication Brief
- Material: exact grade and temper — ‘2mm 5052-H32 aluminium’, not just ‘aluminium’. See our materials guide
- Surface finish: ‘Powder coat RAL 9005 black’ / ‘Anodise Type II clear’ / ‘Bare degreased’
- Quantity: prototype qty AND production qty if known — Manufyn quotes both simultaneously
- Required delivery date: allows standard vs express assessment before accepting the order
- Tolerance: ‘ISO 2768-m general unless shown’ covers most parts — see our ISO 2768 tolerances guide
- Country of delivery: affects freight routing and landed cost calculation
Step 3: Manufyn’s 24-Hour Online Sheet Metal Fabrication Review
- Drawing received — automated acknowledgement within minutes
- DFM review — engineers check bend radii, hole clearances, file errors, tolerance feasibility
- DFM report issued — issues documented with proposed corrections, sent before quoting
- Quote issued — line-item breakdown: material / cutting / forming / welding / finishing / inspection / freight — within 24 hours
- Order confirmed — you approve quote and drawings; NDA signed if required
- Production scheduled — material ordered, CNC programs generated, date confirmed
Step 4: Reading Your Online Sheet Metal Fabrication Quote
| Quote Line | What It Represents | What to Check |
|---|---|---|
| Material | Grade, weight × qty + scrap factor | Verify grade matches your PDF specification |
| Laser cutting | CNC program + machine run time per part | Process matches drawing complexity |
| CNC bending | Press brake setup + bends × run time | Bend count matches your drawing |
| Welding | MIG/TIG, weld length, hours | Process is appropriate for your material |
| Surface finish | Process, specification, surface area | RAL colour or anodise class is correct |
| Inspection / FAIR | 100% (prototype) or AQL (production) | Prototype must include 100% + FAIR |
| Freight | Air/sea, carrier, transit time | Confirm Incoterm (DDP vs EXW) and address |
For what drives each cost line in an online sheet metal fabrication quote, see our sheet metal fabrication price guide.
Step 5: Sample Approval Before Production
- Prototype placed referencing approved DFM report
- Prototype 100% inspected — FAIR issued with actual measurement data
- Buyer confirms prototype dimensions and assembly fit physically
- Production order placed referencing approved FAIR number
Full first-article process: prototype sheet metal fabrication guide
Common Mistakes in Online Sheet Metal Fabrication
| Mistake | Consequence | Correct Approach |
|---|---|---|
| Sending PDF only | Slower quote; possible re-drawing charge | Always include STEP or DXF alongside PDF |
| Material unspecified | Wrong material quoted — repeat quote delay | State exact grade and temper every time |
| Skipping prototype | Production batch fails at assembly | Always prototype first on new part numbers |
| Not reviewing FAIR | Production repeats prototype errors | Measure prototype; approve FAIR before production PO |
| Over-specified tolerances | +20–50% cost for no functional benefit | ISO 2768-m general; tight callouts only where critical |
| No NDA before sending drawings | IP exposure | Request NDA before submitting any drawing |
Frequently Asked Questions — Online Sheet Metal Fabrication
Online sheet metal fabrication works in five steps: (1) upload STEP or DXF + PDF, (2) receive DFM report and itemised quote within 24 hours, (3) approve quote digitally, (4) production runs 5–15 working days, (5) parts dispatched by tracked freight. Start at manufyn.com
Upload STEP/DXF + PDF to manufyn or email info@manufyn.com. Include material, finish and quantity. Manufyn issues a free DFM report and itemised quote within 24 hours. No commitment required.
STEP preferred for parts with bends; DXF for flat laser-cut parts at 1:1 scale. Always include a PDF drawing with dimensions, tolerances, material and finish. Full file prep rules: DFM design guide
Yes — Manufyn has no minimum order. Order 1 piece or 100,000 pieces through the same online sheet metal fabrication process. For the full quantity/cost curve.
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Quote in 24 hrs · No Minimum Order · Free DFM Review · NDA on Request
WhatsApp: +91 84840 32262 | Email: info@manufyn.com
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